Fix table styles and activation of style-buttons

* Formatting columns, rows and cells now work in combination
* Activation-status of style-buttons now correctly displayed
Add several table styles to boilerplate-css
Minor code-cleanup for table-styles-fix
Merge branch 'hotfix-table-styles' of git://github.com/maschonber/Aloha-Editor into commercial-hotfix-batu-fr1

Conflicts:
	build/hotfix-changelog.md
	src/plugins/common/table/lib/table-plugin.js